Bung ring construction



Feb. 4, 1936.

c. H. DRAPER 151- AL BUNG RING CONSTRUCTION 2 Sheets-Sheet 1 Filed Jan. 4, 1955 Feflfl, 1936. c. H. DRAPER ET AL 2,029,764 I BUNG RING CONSTRUCTION Filed Jan. 4, 1935 Z SheetS- Sheet 2 m 5 M P 0 1. w 0% A 6W c A aw n,

OFFICE 2,029,764 BUNG RING CONSTRUCTION Charles H. Draper, Cleveland Heights, and Walter 0. Grosser, Cleveland, Ohio, assignors to The Draper Manufacturing Company, Cleveland, Ohio, a corporation of Ohio Application January 4, 1935, Serial No. 320 14 Claims. (01. 285-49) The invention relates to bung ring construction ed portion projecting outwardly from a container for metallic containers, barrels, drums, vessels, wall is utilized. packages and the like, utilized for shipping, stor- These problems are further complicated by the ing and/or dispensing fluid, liquid, or semi-solid fact that the bung ring must be so rigidly sematerials; and relates more particularly to the cured to the container wall that the bung ring rigid attachment of a relatively heavy or massive will not turn or rotate with respect to the conmetallic bung ring, having a relatively large tainer wall when twisting forces are applied to opening therethrough, to a thin sheet metal wall the bung ring, or to a member being screwed of a metallic container without welding or onto or unscrewed from the bung ring; because i seaming. a turning or rotation of the bung ring in the 0 Metallic containers are extensively used for container wall would so loosen the joint between transporting, storing and dispensing various the bung ring and container wall that leakage kinds of oils, lubricants and the like; and it is might occur.

frequently desirable, if not necessary, to provide It is therefore an object of the present invensuch containers with bung rings having large tion to provide a bung ring construction for a openings for ready access to such contained mametallic container in which a relatively heavy terials when they have high viscosity. It is likeor massive metallic bung ring having a relativewise desirable, if not necessary, to provide such ly large opening therethrough is attached by a containers wi h n rings having large p nleak-proof joint to a thin sheet metal wall of a h f l t e p o and attachment 0f y metallic container without welding or seaming. 2

one f a number of difierent yp s of d sp nsin A further object of the present invention is to pumps when the contained materials are relprovide for the attachment of a bung ring havatively fluid. ing an annular outwardly projecting externally In such instances, it may also be required that threaded portion, to a thin sheet metal container 5 the bung ring be provided with external threads w n, located outwardly with respect to the container A further object of the present invention is wail to which the bung ring is attached. Moreto provide for the attachment of a bung ring to (WEI, it y q tly be requ ed that the bu a metallic container wall whereby the bung ring ring be accurately located in a certain particular may always be accurately located in a certain so 0 p rm d position with respect t the predetermined position with respect to the container wall to which it is attached. And finally, tainer wall. it may sometimes be required that the bung ring Moreover, itis an object of the present invenbe a die-cast metal bung ring. tion to provide a hung ring construction for a Under such conditions, it may be impossible to metallic container in which a die cast metal bung .3 satisfactorily attach a relatively large and masring is rigidly attached in a leak-proof manner sive bung ring to a thin sheet metal container to athin sheet metal container wall.

ll by s aming or welding, which constitute the It is likewise an object of the present invenusual modes of attachment of bung rings to metion to provide a bung ring construction for a tallic container walls. metallic container in which a bung ring is atit) Thus, the welding of a heavy metal bung ring tached to athin sheet metal wall of the container, 40 to a thin metal container wall may so weaken and in which axial withdrawal of the bung ring the thin sheet metal wall adjacent to the hung from the opening in the container wall within ring that the resulting container is imperfect. which the bung ring is located, is prevented. Moreover, when Welding is utilized, bung rings It is also a further object of the present inns cannot always be accurately located in a predevention to provide a bung ring construction for termined position with respect to the container a metallic container in which a bung ring is atwall. tached to a thin sheet metal wall of the con- Lflsewise, when a seam is used for attaching tainer, and in which rotation or turning of the a bung ring to a container Wall, a gasket seal is bung ring in the opening in the container wall almost always provided between the container within which the bung ring is located, is pre- 50 wall per se and the closure means for the bung vented. ring in order to make the joint between the bung Moreover, it is a further object of the presring and container wall leak proof; and such a ent invention to provide a bung ring construcgasket seal cannot ordinarily be provided when tion for a metallic container in which a bung a s ring having n n u a exte n y t read ring is attached to a container wall, and in which iacent to the inner end thereof registering means are provided on the bung ring and container wall for accurately positioning the bung ring in the opening in the container wall within which the bung ring is located.

And finally, it is an object of the present invention to provide a simplified bung ring construction for a metallic container having a low manufacturing cost and which incorporates the aforesaid desiderata.

These and other objects may be obtained by the elements, parts, combinations and constructions constituting the present invention, preferred embodiments of which are shown in the accompanying drawings and are hereinafter described in detail and claimed, which may be stated in general terms as including in bung ring construction for a metallic container, a thin sheet metal container wall provided with a preferably integral tubular neck forming a bung opening. for the container projecting or extending preferably inwardly of the container from the wall, the neck terminating in an inturned annular flange or lip, the lip having one or more pairs of projecting lugs forming locating means, a heavy metallic bung ring having an annular sleeve portion provided with an outer peripheral surface frictionally engaging the inner peripheral surface of said neck, there preferably being an annular shoulder on said annular sleeve portion adnormally resting on said lip, there being one or more projecting ears on said sleeve portion below and spaced from said shoulder engaging under said lip, said bung ring being provided with an annular externally threaded flange at its upper end lapping said neck and container wall exteriorly thereof, a sealing gasket interposed between the container Wall and the bung ring flange, one of said ears being located and engaged between the lugs of one of said pairs of lugs, preferably a heavy metallic ring pressed onto said neck rigidly clamping the neck between the heavy ring and hung ring sleeve, and rivet or pinning means securing said heavy ring, neck and bung ring sleeve together.

In the accompanying drawings, which show the present improvements:-

Figure 1 is a side elevation of a container partly broken away to show the improved bung ring construction;

Fig. 2 is an enlarged sectional view of the bung ring construction shown in Fig. 1;

Fig. 3 is a top plan view of the parts shown in Fig. 2;

Fig. 4 is a bottom plan view of the improved bung ring construction shown in Fig. 2, certain parts being in section as on the line ii- 5, Fig. 2;

Fig. 5 is an enlarged View of a portion of Fig. 2; Fig. 6 is a fragmentary elevation of certain of the parts shown in Fig. 5, looking from the line 66, Fig. 5;

Fig. 7 is an enlarged view of another portion of Fig. 2;

Fig. 8 is a view similar to Fig. 7 showing a modified form of construction;

Fig. 9 is a sectional view of a screw cap which may be used as a closure for the bung ring shown in Figs. 1 and 2;

Fig. 10 is a sectional view of the bung ring shown in Figs.'1 and 2 prior to insertion in the bung opening of a container wall;

.Fig. 11 is a bottom plan view of the bung ring shown in Fig. 10 looking in the direction of the arrows H- l I, Fig. 10;

Fig. 12 is a fragmentary sectional view of a portion of a container wall showing the bung opening therein prior to assembling a bung ring in the opening;

Fig. 13 is a bottom plan view of the parts shown in Fig. 12 looking in the direction of the arrows Iii-i3, Fig. 12;

Fig. 14 is a sectional view of a ring utilized in securing the bung ring to the container wall;

Fig. 15 is a bottom plan View of the ring shown in Fig. 14 looking in the direction of the arrows 65-45, Fig. 14; and

Fig. 16 is a fragmentary sectional view showing one step in a preferred manner of securing the bung ring to the neck and reenforcing ring.

Similar numerals of reference indicate corresponding parts throughout the various figures of the drawings.

A wall of a metallic container or vessel I? of any well known type is generally indicated at [8 (Fig. 1), and the same is preferably the top head of the container and may be seamed in the usual manner at 59 to the container side wall 23. The wall it is made of relatively thin sheet metal and is provided with a preferably integral tubular neck 2! (Fig. 12), which projects preferably inwardly of the container and terminates in an inturned annular flange or looking lip 22, to form a bung opening for the container; and the container wall 18 is preferably reinforced against distortion at and adjacent to the opening by providing the annular shoulder 23 around the openmg.

The juncture between the neck 2i and the wall i8 is preferably formed with a rounded raised bead 24 for a purpose which will be hereinafter described. The locking lip 22 is preferably pro vided with a pair of lugs 25 (Fig. 13) initially projecting inwardly from the locking lip 22 for a purpose which will also be hereinafter described.

The bung ring to be secured to the wall I8 is generally indicated at 26 (Fig. 10) and, referring to Fig. 1, the same has a relatively large opening therethrough as compared with the size of the container head; and the bung ring 26 is likewise relatively massive and heavy, as compared with the thin sheet metal from which the walls l8 and 20 of the container I? are formed.

The bung ring 26 (Fig. 10) includes an annular sleeve portion 21 provided with an outer peripheral surface 28 which terminates in an annular shoulder 29, adjacent to the lower or inner end 38 thereof. The bung ring sleeve 28 is also provided with a plurality of projecting ears 3i, also adjacent to the inner end 30 thereof and spaced from and below the shoulder 29.

The bung ring 26 is likewise provided at its upper or outer end with an annular flange 32, which is externally threaded at 33; and the annular flange 32 is formed with an annular shoulder 34 at the upper end of the sleeve portion 21'. The bung ring 26 may be a casting, forging or a pressed metal part; and in the embodiment illustrated in the drawings, the same may preferably be a die casting.

Referring to Figs. 2, 10 and 12, the bung ring 26 is assembled with and secured to the container wall I8 by inserting and telescoping the same within the tubular neck 2| to the position shown in Fig. 2 of the drawings whereby the outer peripheral surface 28 of the bung ring frictionally engages the inner peripheral surface 35 of the tubular neck 2!, a gasket 35 being interposed between the bung ring shoulder 3 and the rounded bead 24 at the upper end of the neck for providing a liquid tight seal between the bung ring and the container wall.

The bung ring 26 is assembled to the container wall l6 before the container wall I8 has been seamed to the container wall 29; and as the bung ring 26 is pressed into the tubular neck 2|, the ears 3| ride over or slip past the locking lip 22 and engage under the lip to prevent axial removal of the bung ring from the neck 2|. When the ears 3| are engaged below the lip 22, the gasket 36 is compressed between the bung ring shoulder 34 and the rounded containerwall bead 24, which is overlapped by the bung ring flange 32.

In this position of the parts (Fig. 2), the bung ring shoulder 29 preferably contacts, engages or rests on the lip 22; although it is not necessary for the shoulder 29 to seat on the lip 22 in order to effect a seal, because the seal is provided by the frictional engagement between the surface 28 and 33, and by the gasket 34. On the contrary, the parts must be so proportioned that the gasket 34 is tightly pinched or compressed before the shoulder 26 seats on the lip 22.

The ears 3| serve anotherpurpose, that is, they may be used. as a means of accurately locating the bung ring at a certain predetermined position with respect to the container wall; and this is accomplished by inserting the bung ring 26 into the tubular neck 2| in such a manner that one of the ears 3| interengages between the two lugs 5 of the pair of lugs shown in Fig. 13. As the engaged ear 3| rides over the lip 22, the ears 25 become bent downwardly as shown at 2501. in Figs. 2, 4, 5 and 6, thus accurately locating the bung ring in the tubular neck 2|. The lugs 25a. likewise serve, by engaging the lug 3| at each end 3M thereof, to normally prevent rotation of the bung ring in the tubular neck 2|.

While only one pair of lugs 25 are shown in the drawings, it is to be-understood that a pair of lugs may readily be provided on the lip 22 for each locking ear 3| with which the bung ring 26 is provided.

The bung ring 26 may be closed in any suitable manner as by any usual form of screw cap such as the octagonally headed cap 3! best shown in Figs. 2, 3 and 9. The cap 31 is screwed onto the threaded bung ring flange 32 and may be sealed in liquid tight sealing relation thereto by the sealing gasket 38.

Although the interengagement between the lugs 25a and ear 3| (Fig. 6) normally holds the bung ring 26 against rotation in the tubular neck 2|, yet if a severe twisting force is transmitted to the bung ring, as for instance when the cap 31 is being tightly screwed onto the bung ring, the strength of the lugs 25a and the ear 3| isnot sufiicient to prevent rotation of the bung ring, be.- cause either the lugs or the ear or both may be sheared ofI.

Accordingly, after the bung ring 26 has been pressed into the tubular neck 2 a relatively heavy metallic ring 39 (Fig. 14) is pressed over the neck 2i so that the neck 2| is rigidlyclamped between the bung ring sleeve 21 and the ring 39, and is reinforced thereby. The ring 39 is preferably formed with three holes as shown at 42, Figs. 14 and 15.

After the ring 39 is so positioned (Figs. 2 and 4) the neck 2| and bung ring sleeve 21 may be drilled at 43 to receive preferably drive screw rivets 4|, which secure the ring 39, the neck 2| and the bung ring 26 together. The drilling of the holes 40 is preferably accomplished by drilling through the holes 42 previously provided in the ring39, as shown in Fig. 16.

If it is unnecessary to accurately locate. the

bung ring 26, the lugs 25 may be dispensed with because the rivets 4| and ring 38 securely clamp and hold the bung ring against rotation within the neck 2 I.

In certain cases, it may be unnecessary to provide the additional ring 39, and in such event the tubular neck 2| and bung ring sleeve 21 may be riveted together to hold the bung ring against rotation.

Referring to Fig. 8, the use of drive screw rivets 4| is not essential, but ordinary rivets 4|a may be utilized for securing the bung ring sleeve 21, the tubular neck 2| and the ring 39 together. Likewise, referring to Fig. 8, the upper end of the ring 39 may be rounded at 43 to fit into the rounded head 24 provided at the juncture between the neck 2| and wall |8 for reinforcing the bead 24 and insuring a tight seal with the gasket 36.

The improved bung ring construction fully lends itself to all requirements and uses for metallic containers during shipping, storing and dispensing, and provides a simplified and inexpensive construction by which relatively heavy metallic bung rings having relatively large openings there:

through may be rigidly attached to and accurately located with respect to a thin sheet metal container wall without welding or seaming, so .as to provide a bung ring flange projecting outwardly,

from the container which may be externally threaded if desired.

The above description and the drawings referred to therein, are illustrative of structures embodying our invention, and the claims appended hereto are intended to cover such modifications of and slight changes in the structures shown and described, as are apparent to those skilled in the art.

We claim:

1. In bung ring construction for a metallic container, 2. wall provided with a tubular neck projecting inwardly therefrom forming a bung opening, a bung ring having a sleeve telescoped within said neck, the bung ring being provided at its outer end with a flange lapping said neck and container wall, means preventing the bung ring from being withdrawn from the neck, and

separate means extending through the bung ring sleeve and neck securing the bung ring against rotation in the neck.

2. In bung ring construction for a metallic container, a wall provided with a tubular neck projecting inwardly therefrom forming a bung opening, a bung ring having a sleeve telescoped within said neck, the bung ring being provided at its outer end with a flange lapping said neck and container wall, a gasket interposed between said flange and container wall, means preventing the bung ring from being withdrawn from the neck and holding the gasket under compression, and separate means extending through the bung ring sleeve and neck securing the bung ring against rotation in the neck.

3. In bung ring construction for a metallic container, a wall provided with a tubular neck projecting therefrom forming a bung opening, the neck terminating in an inturned lip, a bung ring having a sleeve telescoped within said neck, the bung ring being provided at its outer end with a flange lapping said neck and container wall, means projecting outwardly from the bung ring slipping past and engaged under said inturned lip preventing the bung ring from being withdrawn from the neck, and means securing the. bung ring against rotation in the neck.

4. In bung ring construction for a metallic container, a wall provided with a tubular neck projecting therefrom forming a bung opening, the

neck terminating in an inturned lip, a bung ring having a sleeve telescoped within said neck, the bung ring being provided at its outer end with an externally threaded flange lapping said neck and container wall, an ear projecting outwardly from the inner end of said bung ring sleeve slipped past and engaged under said inturned lip, and means securing the bung ring against rotation in the neck.

5. In bung ring construction for a metallic container, a wall provided with a tubular neck projecting inwardly therefrom forming a bung opening, a bung ring having a sleeve telescoped into and frictionally engaged within said neck, means providing a compressed liquid-tight seal between said bung ring and container wall, and separate means extending through the bung ring sleeve and neck securing the bung ring against rotation in the neck. 7

6. In bung ring construction for a metallic container, a wall provided with a tubular neck projecting therefrom forming a bung opening, a bung ring having a sleeve telescoped within said neck, a ring telescoped over said neck clamping the neck against said bung ring sleeve, means providing a compressed liquid-tight seal between said bung ring and container wall, and means extending through the telescoped ring, neck and bung ring sleeve securing the said telescoped ring, neck and bung ring sleeve together.

7. In bung ring construction for a metallic container, a. wall provided with a tubular neck projecting therefrom forming a bung opening, the neck terminating in an inturned lip, a bung ring having a sleeve telescoped within said neck, the bung ring being provided at its outer end with a flange lapping said neck and container wall, an ear projecting outwardly from the inner end of said'bung ring sleeve slipped past and engaged under said inturned lip, and inturned lugs on said lip bent downward as the sleeve is telescoped within said neck engaging said ear holding the bung ring against rotation in the neck.

8. In bung ring construction for a metallic container, a wall provided with a tubular neck projecting therefrom forming a bung opening, the neck terminating in an inturned lip, a bung ring having a sleeve telescoped within said neck, the bung ring being provided at its outer end with a flange lapping said neck and container wall, an ear projecting outwardly from the inner end of said bung ring sleeve slipped past and engaged under said inturned lip, and rivet means extending through the bung ring sleeve and neck securing the neck and bung ring sleeve together.

9. In bung ring construction for a metallic container, a wall provided with a tubular neck projecting therefrom forming a bung opening, the neck terminating in an inturned lip, a bung ring having a sleeve telescoped within said neck, the bung ring being provided at its outer end with a flange lapping said neck and container Wall, an ear projecting outwardly from the inner end, of

said bung ring sleeve slipped past and engaged under said inturned lip, inturned lugs on said lip bent downward as the sleeve is telescoped within said neck engaging said ear for locating the bung ring in said neck, and rivet means extending through the bung ring sleeve and neck securing the bung ring and neck together.

10. In bung ring construction for a metallic container, a wall provided with a tubular neck projecting therefrom forming a bung opening, a cast metal bung ring having a sleeve telescoped within said neck, the bung ring being provided at its outer end with an externally threaded flange lapping said neck and container wall, and means securing the bung ring against rotation in the neck.

11. In bung ring construction for a metallic container, a wall provided with a bung opening, a cast metal bung ring in said bung opening provided at its outer end with an externally threaded flange lapping said container wall, means providing a compressed liquid-tight seal between said bung ring and container wall, and means securing the bung ring against rotation in the opening.

12. In bung ring construction for a metallic container, a wall provided with a tubular neck projecting therefrom forming a bung opening, the neck terminating in an inturned lip, a bung ring having a sleeve telescoped within said neck, a ring telescoped over said neck clamping the neck against said bung ring sleeve, means projecting outwardly from the bung ring engaging under said inturned lip preventing the bung ring from being Withdrawn from the neck, and means extending through the telescoped ring, neck and bung ring sleeve securing the said telescoped ring, neck and bung ring sleeve together.

13. In bung ring construction for a metallic container, a wall provided with a tubular neck projecting therefrom forming a bung opening, the neck terminating in an inturned lip, a bung ring having a sleeve telescoped within said neck, a ring telescoped over said neck clamping the neck against said bung ring sleeve, and means projecting outwardly from the bung ring slipped i past and engaged under said inturned lip preventing the bung ring from being withdrawn from the neck.

14. In bung ring construction for a metallic container, a wall provided with a tubular neck projecting therefrom forming a bung opening, the neck terminating in an inturned lip, a bung ring having a sleeve telescoped within said neck, the bung rlng being provided at its outer end with an externally threaded flange lapping said neck and container wall, a ring telescoped over said neck clamping the neck against said bung ring sleeve, a gasket interposed between said flange and container wall, an ear on the inner end of said bung ring sleeve engaging under said lip and holding the gasket under compression, lugs on said lip engaging said ear for locating the bung ring in said neck, and rivet means securing the said telescoped ring, neck and bung ring sleeve together.

CHARLES H. DRAPER. WALTER C. GROSSER. 

